Fixed and variable displacement A/C compressors
Thread Starter
Staging Lane
Joined: Mar 2006
Posts: 54
Likes: 0
From: Aviano, Italy
Fixed and variable displacement A/C compressors I am swapping an LS2 from a 2005 GTO into my 70 Lemans Sport that has the factory R12 system still intact. I know basics about A/C but this is bit much for me.
I have to relocate the compressor on the LS2 up top so I don't need to notch the frame. the brackets will allow me to use a Sanden fixed displacement compressor. I want to keep the Lemans evaporator since it is factory. I can redo all lines no problem and figured I could get a new filter/drier and orifce tube for the GTO and adapt it for use. I have the old ones but assume I should replace them. I also want to use the condensor from the GTO since it fits nicely on the Ron Davis Radiator that was on the Goat.
The GTO uses a variable displacement compressor, will a fixed be a problem for the Goat's components?
Any other things I should be concerned about?
I have to relocate the compressor on the LS2 up top so I don't need to notch the frame. the brackets will allow me to use a Sanden fixed displacement compressor. I want to keep the Lemans evaporator since it is factory. I can redo all lines no problem and figured I could get a new filter/drier and orifce tube for the GTO and adapt it for use. I have the old ones but assume I should replace them. I also want to use the condensor from the GTO since it fits nicely on the Ron Davis Radiator that was on the Goat.
The GTO uses a variable displacement compressor, will a fixed be a problem for the Goat's components?
Any other things I should be concerned about?
Launching!
Joined: Oct 2009
Posts: 235
Likes: 0
You can make it fixed by removing the valve that makes it variable. Remove the O-ring and install the valve. The compressor oil will have to be refilled. The valve can be found by looking underneath the compressor, it is held in with a C-clip and has a hex head integrated into it.
Yes that will work fine either the Sanden or the factory variable 1 modified as described in the previous post and You can use R-134 refrigerant provided You use the proper Pag oil ,,,,,,,,the only thing You might want to do but should'nt be a problem if You don't is to flush out the system unless You've had a compressor failure You don't have to .
Launching!
Joined: Oct 2009
Posts: 235
Likes: 0
Launching!
Joined: Oct 2009
Posts: 235
Likes: 0
Works for me. Try this one.
http://www.aircondition.com/sitesear...=rcv&sa=Search
Both of the two articles at the bottom of the page are relevant.
http://www.aircondition.com/sitesear...=rcv&sa=Search
Both of the two articles at the bottom of the page are relevant.
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You can make it fixed by removing the valve that makes it variable. Remove the O-ring and install the valve. The compressor oil will have to be refilled. The valve can be found by looking underneath the compressor, it is held in with a C-clip and has a hex head integrated into it.
I'm thinking about going this route...could someone tell me...what the V7 fixed compressor c.i. displacement would be after this mod?
thanks...Frank
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Teching In
Joined: Apr 2010
Posts: 18
Likes: 0
From: Rhode Island
After reading that article, I'm still a little unsure if I can do this mod to the compressor and use the original evaporator, dryer, and low pressure cutoff switch in an 1987 S10? Is there anything more to it than that?
